Home / 25,784.61-35,580.92-15,172.80

Finding the Fourth Proportional to 25,784.61, 35,580.92 and 15,172.80

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Solution

The fourth proportional to 25,784.61, 35,580.92 and 15,172.80 is: 20,937.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,784.61 : 35,580.92 = 15,172.80 : x
  2. Step 2: Convert to fraction form
    25,784.61/35,580.92 = 15,172.80/x
  3. Step 3: Cross multiply
    25,784.61x = 35,580.92 × 15,172.80
  4. Step 4: Simplify right side
    25,784.61x = 539,862,107.11
  5. Step 5: Solve for x
    x = 539,862,107.11/25,784.61
  6. Step 6: Final answer
    x = 20,937.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.